{"id":7944,"date":"2026-07-24T11:44:50","date_gmt":"2026-07-24T08:44:50","guid":{"rendered":"https:\/\/axinar.com\/?p=7944"},"modified":"2026-07-24T11:44:50","modified_gmt":"2026-07-24T08:44:50","slug":"pv-tilt-angle-greece-by-zone","status":"publish","type":"post","link":"https:\/\/axinar.com\/en\/blog\/pv-tilt-angle-greece-by-zone","title":{"rendered":"PV Tilt Angle in Greece: How It Is Calculated per Zone"},"content":{"rendered":"<p>The tilt angle of a photovoltaic panel significantly affects annual production, but not the way many think. A 5\u00b0 deviation from optimal angle, in Greece, typically costs <strong>only 1\u20132% of annual production<\/strong>. So the &#8220;perfect&#8221; tilt is rarely what really matters, often adaptation to building or purpose is more important.<\/p>\n<h2>Basic Rule: Geographic Latitude<\/h2>\n<p>The simple empirical rule: <strong>optimal angle \u2248 geographic latitude<\/strong> (if you target maximum annual production). For Greece:<\/p>\n<ul>\n<li><strong>Crete (Heraklion 35.3\u00b0N):<\/strong> Optimal \u2248 28\u201330\u00b0<\/li>\n<li><strong>Athens (37.98\u00b0N):<\/strong> Optimal \u2248 30\u201332\u00b0<\/li>\n<li><strong>Larissa, Thessaly (39.64\u00b0N):<\/strong> Optimal \u2248 32\u201333\u00b0<\/li>\n<li><strong>Thessaloniki (40.64\u00b0N):<\/strong> Optimal \u2248 32\u201334\u00b0<\/li>\n<li><strong>Ioannina, Epirus (39.66\u00b0N):<\/strong> Optimal \u2248 32\u201333\u00b0<\/li>\n<li><strong>Xanthi, Thrace (41.14\u00b0N):<\/strong> Optimal \u2248 33\u201335\u00b0<\/li>\n<\/ul>\n<h2>Why Not Exactly the Geographic Latitude<\/h2>\n<p>In practice, optimal angle is <strong>slightly less than the geographic latitude<\/strong> (\u2248 geographic latitude minus 3\u00b0 to minus 5\u00b0). This is because:<\/p>\n<ul>\n<li>Summer has more production hours (longer days)<\/li>\n<li>Atmospheric clarity is greater in summer, more radiation<\/li>\n<li>Smaller tilt better uses the higher summer sun position<\/li>\n<\/ul>\n<h2>Effect of Deviation from Optimal<\/h2>\n<table>\n<thead>\n<tr>\n<th>Deviation from optimal angle<\/th>\n<th>Annual production loss<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u00b15\u00b0<\/td>\n<td>&lt; 1%<\/td>\n<\/tr>\n<tr>\n<td>\u00b110\u00b0<\/td>\n<td>2\u20133%<\/td>\n<\/tr>\n<tr>\n<td>\u00b115\u00b0<\/td>\n<td>4\u20136%<\/td>\n<\/tr>\n<tr>\n<td>\u00b120\u00b0<\/td>\n<td>7\u201310%<\/td>\n<\/tr>\n<tr>\n<td>0\u00b0 (horizontal)<\/td>\n<td>10\u201315% (depending on zone)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>This shows why manufacturers, like AXINAR on <strong>Terrasol 1V\/2V<\/strong>, provide <strong>adjustable tilt<\/strong>: it allows adaptation to specific installation optimum, but also adaptation to space constraints.<\/p>\n<h2>Special Cases<\/h2>\n<h3>Winter Use (heating with heat pump)<\/h3>\n<p>If you use electricity mainly for heating, optimize angle for winter: <strong>geographic latitude + 10\u00b0<\/strong>. In Athens this means \u2248 48\u00b0, much more &#8220;upright&#8221; installation. Increases winter production by 15\u201320%.<\/p>\n<h3>Summer Use (air-conditioning)<\/h3>\n<p>Conversely, if you target covering summer AC: <strong>geographic latitude \u2212 15\u00b0<\/strong>. In Athens \u2248 23\u00b0. Increases summer production by \u2248 8%.<\/p>\n<h3>East-West Paired Arrangements<\/h3>\n<p>In agrivoltaic installations with East-West orientation, tilt is typically <strong>lower (15\u201325\u00b0)<\/strong> and the system gives more uniform daily production curve, ideal when electricity is self-consumed in the agricultural operation.<\/p>\n<h2>Practical Conclusions<\/h2>\n<ul>\n<li>For <strong>net metering (self-consumption during the day)<\/strong>: choose optimal annual angle (geographic latitude \u2212 5\u00b0)<\/li>\n<li>For <strong>DHW boiler or SolBox (thermal storage)<\/strong>: you can be more flexible with tilt, self-consumption doesn&#8217;t depend on angle<\/li>\n<li>For <strong>battery storage systems<\/strong>: optimize for annual production<\/li>\n<li>For <strong>net billing (selling all production)<\/strong>: always optimal annual<\/li>\n<\/ul>\n<div style=\"border:1px solid rgba(221,43,28,.28);border-radius:10px;padding:22px;margin:26px 0;background:rgba(255,255,255,.02);\">\n<div style=\"margin-bottom:14px;\">\n<div style=\"font-family:'Barlow Condensed', sans-serif;font-size:1.35rem;font-weight:700;line-height:1.15;margin-bottom:2px;color:#ffffff;\">AXINAR Terrasol 1V<\/div>\n<div style=\"opacity:.85;font-size:.92rem;color:#ffffff;\">Flat roof, adjustable tilt for optimal angle<\/div>\n<\/div>\n<div>\n<p style=\"margin:0 0 12px 0;line-height:1.55;color:#ffffff;\">Terrasol 1V allows tilt adjustment to the optimal for specific location, Athens, Thessaloniki, Crete have different ideal angles.<\/p>\n<ul style=\"margin:0 0 14px 0;padding-left:20px;color:#ffffff;\">\n<li style=\"margin-bottom:6px;\">Adjustable angle 10\u201335\u00b0<\/li>\n<li style=\"margin-bottom:6px;\">Galvanized Greek manufacture<\/li>\n<li style=\"margin-bottom:6px;\">Free orientation choice<\/li>\n<\/ul>\n<p><a href=\"\/en\/p\/terrasol-1v\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:.9rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.2px !important;padding:10px 22px !important;border-radius:6px !important;text-decoration:none !important;margin-top:10px;\">See the product \u2192<\/a><\/div>\n<\/div>\n<h2>Request a Static Study &amp; Quote<\/h2>\n<p>Send us your project basics, square meters, roof or ground type, zone, PV capacity, and we&#8217;ll respond within 24 hours with a recommended mounting system and <strong>free static study<\/strong>.<\/p>\n<p><a href=\"\/en\/contact\" style=\"display:inline-block !important;background:#dd2b1c !important;color:#ffffff !important;font-family:Barlow Condensed, sans-serif !important;font-size:1rem !important;font-weight:700 !important;text-transform:uppercase !important;letter-spacing:1.5px !important;padding:12px 28px !important;border-radius:8px !important;text-decoration:none !important;margin-top:8px;\">Request quote \u2192<\/a><\/p>\n<hr>\n<p><em>See <a href=\"\/en\/blog\/bifacial-pv-ground-mount-terrasol\">bifacial PV<\/a>, or all <a href=\"\/en\/solar-panel-mounts\/ground-solar-panel-mounts\">AXINAR ground mounts<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The tilt angle of a photovoltaic panel significantly affects annual production, but not the way many think. A 5\u00b0 deviation [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":7414,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"rank_math_title":"PV Tilt Angle Greece: Optimal Values | AXINAR","rank_math_description":"Optimal PV tilt angle per Greek region: Athens 30\u00b0, Thessaloniki 32\u00b0, Crete 28\u00b0. How it is calculated based on latitude & seasonal use.","footnotes":""},"categories":[176],"tags":[],"class_list":["post-7944","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts\/7944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/comments?post=7944"}],"version-history":[{"count":0,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/posts\/7944\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/media\/7414"}],"wp:attachment":[{"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/media?parent=7944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/categories?post=7944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axinar.com\/en\/wp-json\/wp\/v2\/tags?post=7944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}